NUK is the #1 Selling Pacifier Brand in the US Used by Thousands of US Birthing Hospitals Every Year Orthodontic Nipple Helps Promote Healthy Oral Development 1 Gently Exercises Your Baby s Tongue, Palate Jaw Promotes Proper Teeth Alignment by Helping Your Baby Avoid Thumb-Sucking 3 Helps to Soothe Comfort Your Baby so Mom Can Sleep 5 BPA Free 4 Silicone Show off your baby s style with NUK Hello Kitty Orthodontic Pacifiers! Hello Kitty Pacifiers help promote healthy oral development by gently exercising the tongue, palate and jaw. The natural shape nipple promotes teeth alignment by helping to avoid thumb-sucking. The grooves in the pacifier shield allow air to circulate, preventing skin irritation. All NUK orthodontic pacifiers help to soothe and comfort your baby so Mom can sleep.